Merck, C9658-20UN, Carboxypeptidase G from Pseudomonas sp.

Application
Carboxypeptidase G from Pseudomonas sp., or γ-Glutamyl hydrolase, has been used in a study to assess the role of the putidaredoxin COOH-terminus in P-450cam (cytochrome m) hydroxylations. Carboxypeptidase G from Pseudomonas sp. has also been used in a study to investigate the effects of nitric oxide on pemetrexed cytotoxicity via NO‑cGMP signaling in lung adenocarcinoma cells.
Biochem/physiol Actions
Carboxypeptidase G is a lysosomal, thiol-dependent protease, which progressively cleaves γ-glutamyl pteroyl poly-γ-glutamate yielding pteroyl-α-glutamate (folic acid) and free glutamate. It is considered highly specific for the γ-glutamyl bond, but not for the C-terminal amino acid of the leaving group. Molecular mass of this homodimer is approximately 90 kDa. The enzyme is activated by Zn²⁺ ions.
Physical form
Contains sodium acetate salt.
Preparation Note
Chromatographically purified
Solutions should be prepared fresh prior to use.
Other Notes
One unit will hydrolyze 1.0 μmole of L-glutamic acid from (+)amethopterin per min at pH 7.3 at 30 °C.